US4310165A - Elastomeric packing for a clamped connection - Google Patents

Elastomeric packing for a clamped connection Download PDF

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Publication number
US4310165A
US4310165A US06/098,840 US9884079A US4310165A US 4310165 A US4310165 A US 4310165A US 9884079 A US9884079 A US 9884079A US 4310165 A US4310165 A US 4310165A
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US
United States
Prior art keywords
packing
fluid
sealed connection
recess
tight sealed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US06/098,840
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English (en)
Inventor
Hans Martin
Kurt Scharpf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mahle Behr GmbH and Co KG
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Behr GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
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Publication of US4310165A publication Critical patent/US4310165A/en
Assigned to BEHR GMBH & CO. reassignment BEHR GMBH & CO. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE ON 03/29/1990 Assignors: SUEDDEUTSCHKE KUEHLERFABRIK JULIUS FR. BEHR GMBH & CO., KG
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/021—Sealings between relatively-stationary surfaces with elastic packing
    • F16J15/022—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material
    • F16J15/024—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material the packing being locally weakened in order to increase elasticity
    • F16J15/025—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material the packing being locally weakened in order to increase elasticity and with at least one flexible lip
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • F28F9/0226—Header boxes formed by sealing end plates into covers with resilient gaskets

Definitions

  • an elastomeric packing suitable for use in connections between a first part and second part wherein the packing is placed under a compressive force.
  • the packing comprises a generally solid cross section having a recess therein for absorbing deformation of the packing due to the compressive force.
  • the recess comprises an approximately triangular slit, and in another preferred embodiment the recess comprises a void enveloped within the cross section of the packing.
  • a fluid-tight sealed connection comprising a first member having a flange portion; a packing member; and a second member having a recess adapted for receiving the packing member and the flange portion of the first member.
  • the recess has an edge portion which is deformed about the flange portion of the first member to hold said first and second members in compressive contact with the packing member.
  • the packing member comprises the elastomeric packing according to the invention, as defined above.
  • FIG. 1A is a cross-sectional view of a connection having a conventional packing for a flanged connection together with a curve illustrating its sealing force;
  • FIG. 1B is a side view of the connection of FIG. 1A;
  • FIG. 1C is a top view of the connection of FIG. 1A;
  • FIG. 2A is a cross-sectional view of a connection using the packing according to the invention having a triangular slit, in a flanged joint with closing flaps, together with a curve illustrating its sealing force;
  • FIG. 2B is a side view of the connection of FIG. 2A;
  • FIG. 2C is a top view of the connection of FIG. 2A;
  • FIG. 3A is a cross-sectional view of a connection using another packing according to the invention, having a triangular slit for a special clamping connection, together with a curve illustrating its sealing force;
  • FIG. 3B is a side view of the connection of FIG. 3A;
  • FIG. 3C is a top view of the connection of FIG. 3A;
  • FIG. 4A is a cross-sectional view of a connection using another embodiment of the packing according to the invention, having a void, in a flanged joint having a closing strip, together with a curve illustrating its sealing force;
  • FIG. 4B is a side perspective view of the connection of FIG. 4A;
  • FIG. 4C is a top perspective view of the connection of FIG. 4A;
  • FIGS. 5A and 5B are cross-sectional views of the packing according to the invention in the undeformed and in the deformed state.
  • FIG. 6 is a diagram of the relationship between compressive force and deformation for a conventional packing and the packing according to the invention.
  • the cross-section of the gasket is provided with a recess for absorbing the deformation of the packing.
  • this recess according to the invention, initially a reduction of the deforming forces is obtained, in comparison with other known packings for the same degree of deformation.
  • the reduced reaction forces acting on the joint further yield the advantage that the thickness of the material of the parts to be joined may be reduced, particularly that of the part to be deformed or flanged. It is also advantageous in the use of the packing according to the invention that higher structural tolerances may be selected for the parts to be joined, because this will not result in significantly higher restoring forces.
  • an approximately triangular deforming slit is provided in the packing, which during the joining of the two parts absorbs the strain of the packing.
  • Another advantageous embodiment of the invention provides a void inside the cross-section of the packing, so that the advantage of a packing in contact over its entire circumference and well placed in the packing chamber is obtained.
  • the full sealing cross section of the packing is located at the outer side of the clamped connection, while the part of the packing cross section reduced by the recess is on the inside.
  • This configuration effects the relocation of the resultant of the sealing forces to the outside of the clamped connection, so that, because of the reduced lever arm, the bending moment acting on the joint (i.e., the flange overlap or sealing bead and the flange) is diminished. This again leads to less stress on the clamped connection, resulting to longer life and improved functional capabilities of the clamped joint.
  • the packing has a rectangular cross section, reduced in its inner-lying area by means of a recess in the form of a triangle or a void. Because of this rectangular cross section, which is placed in a corresponding rectangular groove representing the sealing chamber, the packing is guided satisfactorily during the joining of the two parts, i.e., during the compression of the flange into the groove and the subsequent folding of the deformable edge area.
  • the packing is advantageously designed as a profiled gasket having a closed outline intended for a heat exchanger.
  • one part consists of a relatively thin walled metal sheet, while the other part is characterized by a cover made of a synthetic plastic material having a flange around which the metal sheet is folded or crimped or fastened by any other desired type of clamping connection.
  • the reduced mechanical stress which exists for the flange in a multiaxial state of stress, also diminishes the relaxation (creep) of the synthetic plastic material, i.e., the flange retains its original shape and the sealing tightness of the clamped connection is retained.
  • Such heat exchangers are produced, for example, as radiators or heaters for automotive vehicles in very great numbers, and the parts to be joined, such as metal sheet bottoms and synthetic plastic flanges, together with the packing, often display substantial tolerances. This gives rise, due to the technical sealing process, to greatly differing reaction forces.
  • the packing according to the invention which may be designed as a profiled gasket having a closed rectangular configuration, may be of particular advantage.
  • FIGS. 1A-1C a conventional flanged connection with a conventional packing having a full sealing cross-section is shown.
  • the sealing force F acts along a line of action w approximately in the center of the width of the packing. This leads to a moment acting on the flange, tending to rotate it around the edge k. This bending moment F.a around the axis of rotation K leads to a twisting and thus an altered position of the flange, as represented by the broken lines.
  • FIGS. 2A-2C show a conventional flanged joint wherein the parts 1 and 2 are joined together by the bending over of a deformable edge area consisting of individual closing flaps 6 around the flange 4.
  • the part 2 here represents the metal sheet bottom of a heat exchanger carrying the corresponding tubes, not shown, and comprising in its outer area a groove-like circumferential channel 5, while part 1 is the synthetic plastic cover or water box for said heat exchanger terminating in the flange 4, which fits into the channel 5.
  • the packing or gasket 3 is arranged between the flange 4 and the bottom of the groove-shaped channel 5, the packing or gasket 3 according to the invention is arranged.
  • This packing is characterized by a triangular recess 7 on the right hand, i.e., the inner side of the flanged connection.
  • the triangular deformation slit 7 has a depth t, corresponding to approximately one half of the compressed width b.
  • This configuration of the packing 3 in relation to the corresponding configuration of the groove 5 results in a sealing force F acting along a line of action w on the left hand, i.e., the outer side of the flanged joint.
  • FIG. 1A it is seen that the effective lever arm a' is substantially reduced with respect to a, resulting in a similar reduction of the moment F.a' acting on the flanged connection, as compared with the moment F.a in FIG. 1A.
  • the flange or foot 4 of the cover 1 is therefore (if the packing 3 of the invention is used) no longer stressed to the extent shown in FIG. 1A, so that the entire connection is more functional.
  • FIGS. 3A-3C show the packing 3 of the invention having the triangular deformation slit 7 for another type of clamped connection, as described in German Patent Application No. P 28 52 408.5 and a corresponding application of the present applicant filed simultaneously with the instant application (Sn 098839, filed 11/5/79) the disclosure of both of which is hereby incorporated by reference.
  • this clamped connection again, two parts 1 and 2, representing the cover 1 with the flange or foot 4 and the bottom plate 2 with its groove-shaped channel 5 of a heat exchanger, are joined together.
  • corrugated sections 9, located above elongated holes 8, are pushed over the foot 4 of the cover 1, so that a solid joint between the parts 1 and 2 is established.
  • the deformable edge section thus has a fundamentally different configuration than that of the conventional flanged joint of FIG. 2A.
  • the packing 3 according to the invention is particularly advantageous because a longer path of deformation of the packing is required when joining the two parts 1 and 2.
  • the foot 4 of the cover 1 must be pushed downwardly, i.e., onto the packing 3, until the sections 9 located above the longitudinal holes 8 may be pushed freely over the upper edge of the foot 4, to attain their corrugated configuration. Then the foot 4 is resiliently returned to the lower edge of the corrugated sections 9 by the restoring force in the packing 3.
  • the course of the line of action w of the sealing force F also indicates that the bending moment F.a' is relatively smaller, and that thus the mechanical stress acting on this clamped connection is reduced in comparison with conventional packings.
  • FIGS. 4A-4C show a further advantageous embodiment of the packing 10 according to the invention, which has a closed cross section and a void 11 arranged inside the said packing 10.
  • This void 11 is, in a manner similar to the above-mentioned triangular deformation slit 7, capable of absorbing deformations of the packing 10, so that the advantages described in connection with the packing 3 are again obtained.
  • This packing 10 with the void 11 has the further advantage that it is contained on all sides in the groove-like channel 5 of the bottom plate 2, thus filling the existing groove cross section of the bottom 2 uniformly.
  • This type of flanged connection is established by the closing, i.e., the bending of the continuous closing strip 12 around the flange 4 of the cover 1.
  • the shortened lever arm a' of the sealing force F and of its line of action w acts to reduce the mechanical stress on the flanged joint.
  • FIGS. 5A and 5B show the packing 3 according to the invention, on the left side in the undeformed and on the right side in the deformed state, wherein the packing 3 has been compressed in a groove-shaped channel in the vertical direction.
  • the undeformed packing 3 has a cross section A o and the additional outside dimensions D o and S o , with B o as the width.
  • Corresponding designations A 1 , d 1 , S 1 and b 1 refer to the packing 3 in the deformed state (FIG. 5B), wherein B o and b 1 have the same dimensions in both cases, because the width of the sealing chamber is constant.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Gasket Seals (AREA)
  • Joints With Sleeves (AREA)
US06/098,840 1978-12-04 1979-11-30 Elastomeric packing for a clamped connection Expired - Lifetime US4310165A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2852409A DE2852409C2 (de) 1978-12-04 1978-12-04 Elastomere Dichtung für eine Flansch-Klemmverbindung
DE2852409 1978-12-04

Publications (1)

Publication Number Publication Date
US4310165A true US4310165A (en) 1982-01-12

Family

ID=6056274

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/098,840 Expired - Lifetime US4310165A (en) 1978-12-04 1979-11-30 Elastomeric packing for a clamped connection

Country Status (5)

Country Link
US (1) US4310165A (es)
JP (1) JPS598702B2 (es)
DE (1) DE2852409C2 (es)
ES (1) ES8302246A1 (es)
FR (1) FR2443623A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12025227B2 (en) 2019-01-23 2024-07-02 Nok Corporation Gasket

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS575033A (en) * 1980-06-11 1982-01-11 Asahi Optical Co Ltd Automatic focusing camera of lens interchangeable type
JPS575015A (en) * 1980-06-11 1982-01-11 Asahi Optical Co Ltd Interchangeable lens barrel
JPS575032A (en) * 1980-06-11 1982-01-11 Asahi Optical Co Ltd Automatic focusing camera of lens interchangeable type
JPH0615956B2 (ja) * 1982-06-21 1994-03-02 日本電装株式会社 熱交換器
JPS59134781U (ja) * 1983-02-25 1984-09-08 カルソニックカンセイ株式会社 熱交換器のシ−ル構造
JPS63145872A (ja) * 1986-12-05 1988-06-17 Eagle Ind Co Ltd 自己増圧型ガスケツト
DE4016020C2 (de) * 1990-05-18 1994-06-16 Goetze Ag Gehäuseverschlußdeckel
AT395641B (de) * 1991-01-14 1993-02-25 Vaillant Gmbh Dichtungsanordnung
DE4243495C5 (de) * 1992-12-22 2010-02-18 Behr Gmbh & Co. Kg Elastomere Dichtung für Wärmetauscher
DE19525802A1 (de) * 1995-07-15 1997-01-16 Gea Ecoflex Gmbh Plattenwärmetauscher
FR2751404B1 (fr) * 1996-07-22 1998-10-09 Valeo Thermique Moteur Sa Echangeur de chaleur a joint d'etancheite perfectionne, notamment pour vehicule automobile
DE29621487U1 (de) * 1996-12-11 1997-02-06 Schmidt-Bretten GmbH, 75015 Bretten Plattenwärmetauscher
DE102007013483A1 (de) 2007-03-21 2008-09-25 Behr Gmbh & Co. Kg Wärmeübertrager, insbesondere Kühlmittelkühler für Kraftfahrzeuge
JP7026800B2 (ja) * 2019-01-23 2022-02-28 Nok株式会社 ガスケット

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3390890A (en) * 1966-09-16 1968-07-02 Clow Corp Push-joint and gasket for cast pipe
US3599490A (en) * 1969-07-11 1971-08-17 Halliburton Co Safety seal for direct reading flow meter

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7115418U (de) * 1971-08-19 Holstein & Kappert Maschinenfabrik Phoenix Gmbh Ringdichtung, insbesondere für ein Fullelement einer Ringkessel Bierabfull maschine
DE1812544U (de) * 1960-02-23 1960-06-02 Weser Ag Dichtungsvorrichtung fuer schiffslukendeckel.
US3125003A (en) * 1961-03-16 1964-03-17 Diaphragm plate construction
FR1538954A (fr) * 1963-09-13 1968-09-13 E Mabille Sa Des Ets Joint d'étanchéité à lèvres et coussin pneumatique à fixation manuelle immédiate dans une gorge métallique, pour caissettes métalliques à munitions et autres coffrets ou boîtes métalliques à couvercle ouvrant
DE6937598U (de) * 1969-09-25 1971-03-18 Siemens Ag Vorrichtung zum abdichten der trennfugen von trennbaren metallischen gehaeuseteilen gegen feuchtigkeitseinfluesse und elektromagnetische strahlungen.
FR2247692A1 (en) * 1973-10-15 1975-05-09 Chausson Usines Sa Non-welded motor vehicle radiator - base of water box wall deforms sealing strip in collector trough groove
DE2353442B2 (de) * 1973-10-25 1980-04-24 Sueddeutsche Kuehlerfabrik Julius Fr. Behr Gmbh & Co Kg, 7000 Stuttgart Rechteckige Dichtung aus elastomerem Material für einen Heizungs-Wärmetauscher oder Kühler
DE7414340U (de) * 1973-12-13 1974-08-01 Des Usines Chausson Asnieres Sa Strahlkörper

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3390890A (en) * 1966-09-16 1968-07-02 Clow Corp Push-joint and gasket for cast pipe
US3599490A (en) * 1969-07-11 1971-08-17 Halliburton Co Safety seal for direct reading flow meter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12025227B2 (en) 2019-01-23 2024-07-02 Nok Corporation Gasket

Also Published As

Publication number Publication date
ES486585A0 (es) 1983-01-01
FR2443623B1 (es) 1984-09-14
JPS5578858A (en) 1980-06-13
DE2852409A1 (de) 1980-06-12
ES8302246A1 (es) 1983-01-01
DE2852409C2 (de) 1982-10-28
JPS598702B2 (ja) 1984-02-27
FR2443623A1 (fr) 1980-07-04

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Owner name: BEHR GMBH & CO., GERMANY

Free format text: CHANGE OF NAME;ASSIGNOR:SUEDDEUTSCHKE KUEHLERFABRIK JULIUS FR. BEHR GMBH & CO., KG;REEL/FRAME:006289/0826

Effective date: 19920917